Epinephrine has been very high on my rock route tick list ever since I first read about it, which was actually not that long ago. Probably back in 2007. Since then, everyone I've asked about the route says basically the same, it's an incredible route, do it if you get the chance.
This was my first trip specifically for climbing outside of California since moving to the state in 2009 and it took some doing to convince my rope gun John to go to RR instead of his usual haunt of J Tree.
My primary goal for the trip was Epi and fortunately for us, I think we picked the best weather day to do it.

We awoke early in the campground to brisk breezes and to be honest, I thought we were going to freeze our asses off. I was thinking cold, shady chimneys and maybe some more of those winds that had damaged both of our tents back at camp. Along the bumpy road the temperature gauge in the car kept dropping and read something like 36 when we left the car. Another group pulled up (of course) as we were making the required Red Rock Rapid Deployment from the trailhead.

The first two pitches are pretty uneventful. The route actually starts off like a well-bolted sport route. I linked the first two and led the next bit leading up to the fabled Epinephrine chimneys.
Edited to add:
After reading another persons TR I recalled that the first actual chimney of this route is very near if not R rated. The holds are there but it's got a bit of an exposed sequence out of the chimney onto the face. The team behind me thought the pitch was a bit spicy and after reflection, I agree.

It's said that even people who despise chimneys or anything approaching something wide, appreciate these chimneys. I can see why. These chimney pitches were by far the best chimneys I've ever done. The sides are slick (for RR) the chimneying methods required are varied and above all, extremely fun. We broke them up into 3 pitches, for us there was a definite crux at the end of the 2nd pitch were we both opted to take the squeeze exit option.
Couple pics from the third pitch of the climb.

Looking up the first chimney pitch.

Credit: bergbryce

Near the top of the first chimney pitch (3rd pitch).

Credit: bergbryce

Fourth pitch, more wide chimney action

Keeps goin'.

Credit: bergbryce

Fifth pitch. This one sports a few bolts and more face holds but still rocks.
The top of this pitch lands you on top of the "Black Pillar" and the unfortunate end of the chimneys.

Sixth pitch. Super fun.

Credit: bergbryce

Post chimney "ecstasy!?"

it was actually pretty good.

Credit: bergbryce

The route continues up the corner above the tower.

John climbing the "Elephant's Trunk" and ditching the boat anchor #5.

Credit: bergbryce

You can link more pitches here and move really fast. The climbing is steep and fun on oodles of face holds.

Roof move up high on Epinephrine.

Credit: bergbryce

More steep climbing up high on the route.

Credit: bergbryce

After 5 or 6 easy pitches above, you'll come to a very obvious right turn where the climbing basically ends. We simul-ed from here and it went fast. Look for this ramp and tree in the next pic. After that, you can un-rope and walk to the summit.

If you see this ramp and tree, you're done!

Credit: bergbryce

You want to have the descent covered because it would be really easy to screw this one up and epic. You want to basically follow the ridge that runs east from the main Black Velvet Peak summit to it's end and then follow the trail/cairns down to the northeast. This eventually joins the Frogland buttress descent and then back to the car and water.

The climb was phenomenal and lived up to all the hype I had built up for it in my head. We climbed it in pretty good style. Just the right amount of water and food and relatively quickly. Car to car in about 10.5 hours. It was definitely the highlight of the trip.

Stellar Trip Report.
Epinephrin was one of the first "long" routes I did with my son Jon. We had quite an adventure. It was his first squeeze chimney, we got off route for two pitches, and made the descent in the dark without headlamps.
Thanks for posting your story and pictures!

Just got back from RR. When I saw your headline it brought me back a few years. Three of us were there and one had never done a ledge bivy. I passed on it, but they started up mid-day and bivied on the ledge above the chimneys. I hung in the valley for the night. Their biggest problem was too little water. Black pee on the descent. Bad planning.

I didn't realize so many people epic on this route!! We un-roped at 2:30. Of course we were up at 4.
Seems like the upper pitches can go really fast and the route finding is as easy as it gets. Follow the corner.

I didn't get to take pictures of some of the other routes we climbed, but on Children's Crag (5 minutes from the car) is an incredible, spicy John Long, Lynn Hill 10b called Ice Climb. Great last pitch of the day, quick to get to.
Also got on Chicken Eruptus and Kemosabe, both in the Ragged Edges area and both very fun.

Whoo, definitely beats my 30 hours car to car. Get that decent right!
Wicked fun route though, I remember spending 30 min getting a booty link cam from that chimney and that final traverse right before you unrope seemed like a bottomless pit of despair at night.